Tristan has been calling on the same customer for years. He handles all of the company's orders and quickly resolves any issues that may come up. On occasion, Tristan takes some of the company employees out to dinner and has even given them tickets to local sporting events. Tristan is involved in.

A. multi-level marketing.
B. loyalty selling.
C. public relations.
D. relationship selling.
E. publicity.

relationship selling

Explanation:

relationship selling is simply the interaction between a salesperson and a consumer of a particular product whereby the salesperson has tight. close interaction with a consumer specifically in the areas of his/her needs and  they show great cares about their customer or buyer in terms of connection and relationship.  A salespeople is concern with how product or services he/she is offering is priced and  the relationship as well as trust that has been built usually between sales and the customer/buyer of the product the salesperson is offering.

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